Loose-leaf binder.



No. 760,799. n PATBNTLD MAY 2.4, 1904. f

O. R. NELSON.

LOOSE LEAP B1NDBR.

APPLIOATION HLLO AUG. 1. 1909.

l 2 SHEETS-SHEET 1.

No MODEL.

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i www No. 760,799. PATENTEDMAY 24, 1904.

,0. R. NELSON.

LoosNLEAF BINDER. APPLICATION, FILED AUG. 1, 1903.

.N0 MODEL. 2 SEEETSQSHBET 2., 4

/2 "u o Nu A/7 n "1.- IIIIIIIIIII Iatented May 24, 1904i.

'PAT-ENT OFFICE.

OHAELEsE. NELsON, O-E CHICAGO, ILLINOIS.

LOOSE-,LEAF BINDER.

SPECIFICATION forming part ef Lettere Patent Ive. 760,799, dated Ivitt'y, 24,1904.

'- vApplication iled August-1, v1903.

To @ZZ whom, it may concern.' l

Be it known that I, CHARLES R. NELSON, a

' citizen of theUnited States, and a resident Of with its covers open.

Chicago, county of Cook, and Stateof Illinois, have invented certain new and useful Improvements in Loose-Leaf Binders, of which the following is a specification and which are illustrated in the accompanying drawings, forming a part` thereof. t

This invention relates to that type 0f looseleaf binders which are especially adapted for use in connection with what ispopularlyknown as the loose-leaf ledger and comprising a rigid back having hinged sides, to which impaling-hooks are attached for passing through vthe leaves. l. e

The Object of the invention is to providel a Y simple, cheap, and eicient mechanism for controlling and securing the hinged sides; and it consists of the structure hereinafter described and vwhich is illustrated in the accompanying drawings, in Which- Figure 1 is a detail plan view of the binder Fig. 2 is a detailplan view of the back ofthe binder. Fig. 3 isa, detail section on the line 3 3 of Fig. 2. VFig-f1 is a detail end elevation of the back. Fig. f5 is a detail cross-section taken on the line '5 5 of Fig. 1, showing the binder open. Fig. 6 is a similar view, the binder being closed; and Fig. 7 is a view similar to Fig. 1, showing a slightly-modified construction. Y

The back of the binder whenc'losed is substantially in the form of an oblong rectangular boX having an open top. This back consists of a base-plate 10, having its ends upturned, as shown at 11, and the sides 12 13 hinged to the base-plate, as shown at 17, so that they may-be thrown down into the same plane as the base 10. The back is covered with cloth or leather, as shown at 14, and to this cover is attached the side boards 1515, so that they are hinged at 16 16.' The side plates 12 13 are controlled by means vof a shaft 18, journaled centrally in one or both of the end plates 11 and carrying a cross-arm o r pair of OppOsitely-disposed crank-arms 19, which are connected with. the side plates by means SerialNo. 167,923. (No model.)

The shaft18 may beof the same length as the back and journaled in both of the end plates 11, in which case it may be provided with a cross-bar 19 at each end,.as shown in Fig. 1, each cross-bar being connected withv the side plates by the links 2O 21. This form of shaft is preferably used on large binders and has one of its ends prolonged through the end plate 11 and squared, as shown at 27, for the engagement of a suitable key. (Not shown.)

In smaller binders it may be preferred to use a short stud-shaft, as shown at 28, which projects through but one of the end plates, and in this case the shaft is preferably provided with a permanently-attached thumbpiece 29, by which it may be turned.

In. use the sheets, being preferably suitably apertured, are fitted upon one pair of impaling-prongs, as 22,'while the .binder is open, asin Fig. 5. The side plates are now closed by turning the shaft 18y or" ';28, and the curvature of the two sets of imp'aling-prongs being identical the oppositely-disposed prongs 23- enter the previously-provided apertures in the sheet, and as the sideplates close against the end plates 11 the spring-catch 211 engages the aperture 25, and the binder is thus secured in its closedposition. The device now constitutes a book which may be used as any ordinary book. e The leaves may be removed by again opening the binder, all of thesheets on one'side of the leaf to be removed being first shifted to one side thereof and all of the sheets on the opposite side of this sheet being removed to the other side of the binder, so that as the latter opens each set will be held by a diierent pair of mpaling-prongs, leaving the intermediate sheet free for removal.

I claim as my invention- 1. In a loose-leaf binder, in combination, a base, end plates. side plates hinged to the base and each carrying impaling-prongs, a rockshaft journaled in one of the ends and having oppositely-disposed crank-arms, and a link connecting each of the crank-arms With one of the side plates.

2. In a loose-leafvbinder, in combination, a base, end plates, side plates hinged tothe base and each carrying impaling-prongs, a rockshaft journaled in the ends and having a pair of oppositely-disposed crank-arms at each end of the shaft, and a link connecting each of the crank-arms with one of the side plates.

3. In a loose-leaf binder, in combination, a base, end plates, side plates hinged to the base and each carrying impaling-prongs, a rockshaft journaled in one of the ends and having oppositely-disposed Crank-arms, a link connecting each of the crank-arms With one of the side plates, and a spring-catch for locking the shaft against rotation.

4. In a loose-leaf binder, in combination, a

hase, end plates, side plates hinged to the base and each carrying leaf-engaging means, a rock-shaft Journaled in one oi' thc ends and having oliipositely-disposed crank-arms, and

a link connecting each of the crank-arms with one of the side plates.

6. In a loose-leaf binder, in combination, a base, a journal-bearing supported by the base, a rocker-shaft journaled in the bearing and having a crank-arm. a plate oscillating about a fixed center, an impaling-prong carried by the plate, and connection between the crankarm and theoscillating plate.

CHARLES R. NELSON.

Witnesses:

LoUIs K. GILLsoN, E. M. KLATCHER. 

